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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Nucleotide sequences of dnaE, the gene for the polymerase subunit of DNA polymerase III in Salmonella typhimurium, and a variant that facilitates growth in the absence of another polymerase subunit.

The dnaE gene of Salmonella typhimurium, like that of Escherichia coli, encodes the alpha subunit containing the polymerase activity of the principal replicative enzyme, DNA polymerase III. This gene, or one nearby, has been identified as the locus of suppressor mutations that promote growth by cells deleted for dnaQ, the gene for the editing subunit of this enzyme complex. Using a combination of nucleotide sequencing and marker rescue experiments, the alteration in one such suppressor was identified as a valine-to-glycine substitution at amino acid 832 of the 1,160-amino-acid alpha polypeptide. The alpha polypeptides of E. coli and S. typhimurium are identical in size and in 97% of their amino acid residues. Their identity includes the valine residue that was changed in the suppressor allele of S. typhimurium. We also localized a temperature-sensitive dnaE mutation to the 3' half of dnaE.[1]

References

  1. Nucleotide sequences of dnaE, the gene for the polymerase subunit of DNA polymerase III in Salmonella typhimurium, and a variant that facilitates growth in the absence of another polymerase subunit. Lancy, E.D., Lifsics, M.R., Munson, P., Maurer, R. J. Bacteriol. (1989) [Pubmed]
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